Circumstellar Origin of Chrysene (C <sub>18</sub> H <sub>12</sub> ) via Self‐Recombination of Resonantly‐Stabilized 1‐Indenyl Radicals and Implications to the Aromaticity of the Carbonaceous Asteroid Ryugu
) in an overall endoergic reaction. These features account for the circumstellar origin of chrysene in pristine samples of the carbonaceous asteroid Ryugu and of the Murchison meteorite. At the microscopic level, the ring expansion involving cyclopentadienyl moieties to two six-membered aromatic rings via pivotal spiroaromatic intermediates affords a versatile, RSFR-initiated mass growth channel essentially leading to graphene-type PAHs and eventually two-dimensional nanostructures in high temperature circumstellar envelopes and in combustion processes.
Authors
- Valeriy N. Azyazov (ORCID: https://orcid.org/0000-0001-9341-4656)
- Vladislav S. Krasnoukhov (ORCID: https://orcid.org/0000-0002-9655-1362)
- Souvick Biswas (ORCID: https://orcid.org/0000-0002-1643-2663)
- Shane J. Goettl (ORCID: https://orcid.org/0000-0003-1796-5725)
- Musahid Ahmed (ORCID: https://orcid.org/0000-0003-1216-673X)
- Alexander Moiseevich Mebel (ORCID: https://orcid.org/0000-0002-7233-3133)
- Nureshan Dias (ORCID: https://orcid.org/0000-0002-4518-0901)
- Stanislaw F Wnuk
- Sabrina Arias
- Ralf I Kaiser
Institutions
- University of Hawaiʻi at Mānoa (US)
- Lawrence Berkeley National Laboratory (US)
- Florida International University (US)
- Samara National Research University (RU)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2026-04-30
- DOI
- https://doi.org/10.1002/anie.8986387
- Primary Topic
- Astro and Planetary Science
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Basic Energy Sciences